import { readFileSync } from 'node:fs';
import { join } from 'node:path';

import { expect, test } from '@playwright/test';

import { contextForUser } from './helpers';

/**
 * Document import pack (issue #64): the sidebar "import document" action.
 * `.docx` goes through the conversion job (needs a pandoc sidecar — the case
 * self-skips without `E2E_PANDOC`, see below); `.md` imports directly. Failures
 * show the localized error and leave no page; concurrent imports both complete.
 * Selectors are language-neutral (the UI follows the user's locale) — CSS
 * classes, not button text.
 */
const BASE_URL = process.env.E2E_BASE_URL ?? 'http://localhost:5173';
// The corpus fixture from #63; the test runner's cwd is `apps/web`.
const DOCX = readFileSync(join(process.cwd(), '../../fixtures/import/article.docx'));
const DOCX_MIME = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';

async function personalPond(
  context: Awaited<ReturnType<typeof contextForUser>>,
): Promise<{ id: string; slug: string }> {
  const ponds = await context.request.get('/api/v1/ponds');
  const pond = (await ponds.json()).find((p: { type: string }) => p.type === 'personal');
  return { id: pond.id, slug: pond.slug };
}

test('imports a .docx through the sidebar and opens the converted page', async ({ browser }) => {
  // `.docx` needs the pandoc sidecar reachable by the api. CI's e2e stack has
  // none (jobs run container-networked; the same reason #63's real-pandoc test
  // skips there), so this runs locally / on a stage with E2E_PANDOC set. The
  // `.md`, failure, and concurrent cases below cover the UI flow without it.
  test.skip(!process.env.E2E_PANDOC, 'needs a reachable pandoc sidecar');
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const pond = await personalPond(context);
  const page = await context.newPage();
  await page.goto(`/p/${pond.slug}`);

  await page.locator('.sidebar__import-input').setInputFiles({
    name: 'field-notes.docx',
    mimeType: DOCX_MIME,
    buffer: DOCX,
  });

  // The conversion job completes and the client navigates to the new page
  // (slug from the document's title "Field Notes").
  await expect(page).toHaveURL(new RegExp(`/p/${pond.slug}/field-notes`), { timeout: 30000 });
  // The body keeps the converted structure (the H1 became the page title).
  await expect(page.locator('.ProseMirror')).toContainText('Observations', { timeout: 15000 });

  await context.close();
});

test('imports a .md directly (no job) and opens the page', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const pond = await personalPond(context);
  const page = await context.newPage();
  await page.goto(`/p/${pond.slug}`);

  const suffix = Date.now();
  await page.locator('.sidebar__import-input').setInputFiles({
    name: 'note.md',
    mimeType: 'text/markdown',
    buffer: Buffer.from(`# Imported Note ${suffix}\n\nHello from markdown.`),
  });

  await expect(page).toHaveURL(new RegExp(`/p/${pond.slug}/imported-note-${suffix}`), {
    timeout: 15000,
  });
  await expect(page.locator('.ProseMirror')).toContainText('Hello from markdown');

  await context.close();
});

test('shows the localized error for an unsupported file and creates no page', async ({
  browser,
}) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const pond = await personalPond(context);
  const before = (
    (await (await context.request.get(`/api/v1/ponds/${pond.id}/pages`)).json()) as unknown[]
  ).length;
  const page = await context.newPage();
  await page.goto(`/p/${pond.slug}`);

  await page.locator('.sidebar__import-input').setInputFiles({
    name: 'notes.txt',
    mimeType: 'text/plain',
    buffer: Buffer.from('plain text, not importable'),
  });

  // The failed import stays listed with a (localized, non-empty) error, and no
  // page is created (the pond's page count is unchanged — no half-created page).
  const failed = page.locator('.sidebar__import-item--failed');
  await expect(failed).toBeVisible({ timeout: 10000 });
  await expect(failed.locator('.sidebar__import-status')).not.toBeEmpty();

  const after = (
    (await (await context.request.get(`/api/v1/ponds/${pond.id}/pages`)).json()) as unknown[]
  ).length;
  expect(after).toBe(before);

  await context.close();
});

test('runs concurrent imports and both complete', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const pond = await personalPond(context);
  const page = await context.newPage();
  await page.goto(`/p/${pond.slug}`);

  const suffix = Date.now();
  await page.locator('.sidebar__import-input').setInputFiles([
    { name: 'alpha.md', mimeType: 'text/markdown', buffer: Buffer.from(`# Alpha ${suffix}\n\nA`) },
    { name: 'beta.md', mimeType: 'text/markdown', buffer: Buffer.from(`# Beta ${suffix}\n\nB`) },
  ]);

  // Both pages are created (one of them also navigates the browser).
  await expect
    .poll(
      async () => {
        const list = (await (
          await context.request.get(`/api/v1/ponds/${pond.id}/pages`)
        ).json()) as { title: string }[];
        const titles = new Set(list.map((p) => p.title));
        return titles.has(`Alpha ${suffix}`) && titles.has(`Beta ${suffix}`);
      },
      { timeout: 15000 },
    )
    .toBe(true);

  await context.close();
});